3-bed semi, with 2 beds currently used as home offices. The house was set up as two zones top and bottom, but we use the house "left-right" more than "top-bottom" - we're on the right side of the house where the offices are through the day, then in bedroom/lounge on the left side. If that makes sense. So when the zone valves failed we just fell back to using it as a single zone, with both valves permanently open.
I'd like to get a little more control though, and be able to heat the two offices daytime without the rest of the house being heated.
So what I'm thinking, based on my reading and the fact that I've already got 4 HR92's but can't get more at the moment at a reasonable price, and that HR92's and HR91's seem to be compatible...
1) Lounge has two radiators. One HR92 for the display panel, HR91 on the other.
2) Bedroom ditto: two radiators. One HR92 for the display panel, HR91 on the other.
3) Bathroom: leave towel rail as an 'always on' radiator - I believe this is best practice, but not sure.
4) Downstairs office: HR91 linked to DT90E, as the valve is behind a chair, so temperature reading won't be reliable and you won't be able to see the screen anyway.
5) Upstairs office: HR92
6) Hall space. The two hallways up and down are linked by a big open stairway and I'll treat these as one zone, with an HR92 on the upstairs radiator as temp sensor and an HR91 downstairs as actuator only.
So that's a total of 4 HR92 and 4 cheaper and more available HR91s. Every 'zone' has something with a display on it.
These will all be bound to an Evohome Controller in the downstairs hall, bound to BDR91 in the upstairs hall.
I suppose I have two questions at the moment.
1) Does it make sense to leave the bathroom towel rail always on (not full blast, but moderately), or is that not wise. I've been told to always have one radiator on, and I have had situations (due to said now unused zone valves) where the boiler gets stuck on, so can see the point.
2) It's a corner-semi, and we do have trouble getting signals around the house - gas smart meter can't communicate with the electric smart meter, and we're using powerline adaptors to get wifi everywhere. The above arrangement SHOULD give everything a direct line to the controller, and the controller to the relay. If this arrangement doesn't work, what are my options? A second controller?
I'd like to get a little more control though, and be able to heat the two offices daytime without the rest of the house being heated.
So what I'm thinking, based on my reading and the fact that I've already got 4 HR92's but can't get more at the moment at a reasonable price, and that HR92's and HR91's seem to be compatible...
1) Lounge has two radiators. One HR92 for the display panel, HR91 on the other.
2) Bedroom ditto: two radiators. One HR92 for the display panel, HR91 on the other.
3) Bathroom: leave towel rail as an 'always on' radiator - I believe this is best practice, but not sure.
4) Downstairs office: HR91 linked to DT90E, as the valve is behind a chair, so temperature reading won't be reliable and you won't be able to see the screen anyway.
5) Upstairs office: HR92
6) Hall space. The two hallways up and down are linked by a big open stairway and I'll treat these as one zone, with an HR92 on the upstairs radiator as temp sensor and an HR91 downstairs as actuator only.
So that's a total of 4 HR92 and 4 cheaper and more available HR91s. Every 'zone' has something with a display on it.
These will all be bound to an Evohome Controller in the downstairs hall, bound to BDR91 in the upstairs hall.
I suppose I have two questions at the moment.
1) Does it make sense to leave the bathroom towel rail always on (not full blast, but moderately), or is that not wise. I've been told to always have one radiator on, and I have had situations (due to said now unused zone valves) where the boiler gets stuck on, so can see the point.
2) It's a corner-semi, and we do have trouble getting signals around the house - gas smart meter can't communicate with the electric smart meter, and we're using powerline adaptors to get wifi everywhere. The above arrangement SHOULD give everything a direct line to the controller, and the controller to the relay. If this arrangement doesn't work, what are my options? A second controller?